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Login to Single user mode in SUSE Linux (SLES / openSUSE)
For troubleshooting point of view sometime we have to login in single user mode in Linux to execute commands like reseting root password in case if system admin forget the root password and run fsck...
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Install and use Ansible (Automation Tool) in CentOS 7
Ansible is a free & open source Configuration and automation tool for UNIX like operating system. It is written in python and similar to Chef or Puppet but there is one difference and advantage of...
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10 passwd command examples in Linux
As the name suggest passwd command is used to change the password of system users. If the passwd command is executed by non-root user then it will ask for the current password and then set the new...
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Install WebSVN for Apache Subversion(SVN) on CentOS 7 & RHEL 7
As the name suggest WebSVN provides a Graphical User Interface (GUI) for managing Apache Subversion (SVN) repositories. Using WebSVN we can compare the revision of files & can view the logs of...
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Install PAC Manager on Linux Mint, Ubuntu & OpenSUSE
PAC (Perl Auto Connector) Manager is a open source tool in Linux like operating system, which provides GUI (graphical user interface) to manage ssh,telnet, sftp, rdesktop, vnc,remote-tty & ftp...
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11 df command examples in Linux
df (disk free) command is used to display disk usage of the file system. By default df command shows the file system usage in 1K blocks for all the current mounted file system, if you want to display...
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Ubuntu 15.10 Desktop Installation Guide
Ubuntu has released its latest version Ubuntu 15.10 code name as “Wily Werewolf” on 22nd Oct 2015. As this version is not LTS, so support will be provided only for 9 months. Some of its newly improved...
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Use Git to take Backup of Configuration files on Linux
Sometimes while working on Linux servers we need to take backup of config files, traditional way of taking backup is to copy the same file with different name or insert some characters at end that...
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Fedora 23 Workstation Installation Steps with Screenshots
Good News for Fedora Users that “Fedora 23” has been released recently. Fedora 23 released in three different editions : Fedora Workstation – Used at Desktop Level Fedora Server – Used for Server...
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Install OpenSUSE Leap 42.1 Step by Step
OpenSUSE Leap 42.1 has been released on 4th Nov 2015. It is build from source code of SLE (SUSE Linux Enterprise) and can be installed only on 64-bit Machine. Before this release there was no free...
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Use Fedora 23 Cloud image in Red Hat OpenStack
Fedora 23 Cloud images are available for download. In this post will use fedora 23 cloud image and will launch it from dashboard(Horizon). I am assuming that OpenStack is already up and running....
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Generate CPU, Memory & I/O report using SAR command
SAR stands for System Activity Report, as its name suggest sar command is used to collect,report & save CPU, Memory, I/O usage in Unix like operating system. SAR command produce the reports on the...
View ArticleSet Password Policies in SLES (SUSE Linux Enterprise Server)
Recently i got the task to implement following password policies on SLES (SUSE Linux Enterprise Server) 11.x Minimum password length should be 10 characters Password should have one UPPERCASE...
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Configure DomainKeys (OpenDKIM) with Postfix on CentOS 7
OpenDKIM is method to digitally sign & verify emails on the mail servers using public & private keys. In other words opendkim implements the DKIM (DomainKeys Identified Mail) standard for...
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Install latest version of Roundcube (Webmail) on CentOS 7
Roundcube is a web browser based mail client & also known as webmail. It provides a GUI ( Graphical User Interface ) where end users can check their mails, can create & manage folders, can use...
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Install Apache, MariaDB and php on Fedora 23 Workstation
Web Server , Database & Scripting Language are the building blocks of web based software like WordPress, Drupal, Joomla and OpenCart. In Fedora linux Apache is the Web Server, Mariadb is the...
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How to Install iRedMail (Mail Server) on CentOS 7 & RHEL 7
iRedMail is out of the box open source mail server solution on Linux like operating system. The beauty of iRedMail is that it provides web based admin panel from where mail admin or system admins can...
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Single Node OpenStack (Liberty) Installation Steps on CentOS 7
OpenStack is a Cloud Software that manage large pool of compute (hypervisors), storage ( block & swift ) and network resources of a data center. It provides a Dashboard where admins can create and...
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Launch an Instance from OpenStack (Liberty) Dashboard
To Launch an instance from OpenStack dashboard, first we need to finish following steps : Create a Project and add a member to the Project. Create a Image and Flavor Create a Network and Router for a...
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Generate CPU, Memory & I/O report using SAR command
SAR stands for System Activity Report, as its name suggest sar command is used to collect,report & save CPU, Memory, I/O usage in Unix like operating system. SAR command produce the reports on the...
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